Lubricator



(No Model.)

muuulmun mm nu mmmunnnunlllpllgm[flan I l 3 Sheets-Sheet 1. G. M-MARGHANT. SIGHT FEED LUBRIATGR.

Patented Oct. 29. 1889.l

(No Model.) 3 Sheets-Sheet 2.

G. M .MARGHANT. SIGHT FEED LUBRIGATOR. 4 NO- 413,759. APatented. Oct. 29, 1889;.

i 'ENTURf WIINESSES; i

' (NoModel.)

Y I shefets-Sheet 8. Gr. M. MARGHANT. SIGHT FEED LUBRIGATORJ.

No. 413,759. Patented 00%. 29, 1889;y

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Unirse STATES PATENT einen.

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sisi-inteso Luenieiaroe.

SPGFCATION forming part of Letters Patent No. 413,759, dated Gctober 29, 18,89. pplication filed Iune'3,lil89. Serial No. 312,997. (No model.)

To all whom it may concern:

' Vlie itknown that l, GEORGE MAULE MARCH- ANT, a subject of the Queen of Great Britain,

f and a resident of Huddersfield, Yorkshire,

England,have invented certain improvements in Sight-Feed Lubricators, of ,which the fol-v lowing is a specification.

My invention relates to sight-feed lubricators, such as are employed for lubricating the cylinders of steam-engines and for other purposes where constant lubrication is required.

In the accompanyingdrawings, which serve to illustrate niy invention, Figure 1 is an elevation of a sight-feed lubricator construct-ed according to my invention. Fig. 2 is a vertical midfsection of the same, showing the operating-piston of the lubricator at its lowest position. Fig. 3 is a section similar to Fig. 2, showinglhe-piston at its highest' position.

In this view l have not repeated the parts seen and in thewall of this cylinder is formed a vertical slot or opening 5, through which pass studs or pins G, serving to pin the piston fast to the cams or operatingzmechanism of the device. This operating mechanism consists of two cams 7 and 8 with spiral faces, the former of which, as before stated, ispinned to .the piston 4, and the latter revolves about the cylinder 3, and is provided at its upper edge with a worm-wheel fhwhich is in engagement with a worm 10, driven positively and intermittently from a pawl-and-ratchet device outslde the casing l from the working part of the steam-engine..

ln Fig. 1,11 represents the ratchet-wheel, and 11 the pawl in engagement therewith,

which is borne on the upper end of .e bent lev `ver l2, to which reciprocating movement is imparted from the euginfe in any suitable way.

The rotary motion of the upper cam 8 causes the lower cam 7 to descend by thespiral faces of the same, and. with it the piston; but as soon as the cams have reached the position shown in Fig. 5 the piston will have reached the extent of its down ward movement, and thus the oil in the chamber 13 at the bottom ofthe cylinder 3 willbe forced orpressed out through an outlet or outlets, as indicated by the arrows in Fig. 2.

6;. These outlets may be covered with wire-gauze ortheliheto prevent any dust 'or fiber from iinding its -way to the working parts of the engine. The oil flows from the outlets through a tube or passage 13 (see Figs. il and 4) to a nozzle or jet l-i, through which it. passes to the sight-cube 2,

'and passes upward through the water or other liquid therein to the top, whence it; overflows through an outlet and a, second jet or nozzlel 15 and through a pipe 15 to the part-s requiring lubrication in the direction indicated by the arrows in Fig. 2.

l will now describe the device whereby the oil contained within the outer casing 1 of the lubricaior is admitted to chamber 13 below the cylinder 3. y

ln the passage 13, leading 'from thechamber 13 to the nozzle 14,1 arrange a valve 24, the spindle of which passes throng the roof of a. casing in which the valve-seat is also formed. 'lhis casingis surrounded by a perforated tube E23, as seen in Fig. 2. The valve is pressed up to its seat normallfl by a spiral spring 24., arranged beneath it, and the upper end of the valve-stem or spindle is in the path oi" anwiper or finger 25, secured by screws or the like to thc upper cem 8, so' that when the cam 8 descends this finger presses down the valve and allows the oil from the interior of the casing to enter chamber 13,

into which it is drawn by the sudden rising of the plunger e in the sume." When the plunger is forced down by the cams, in order that the oil may be supplied to the parts lo be lubricated, theprcssure brought to bear by the spring will have pressed the valve up to its seat, and it will thus be kept closed, so that no oil may pass back into the interieurs@ the easing 1,. l

seid lock-nut, By screwing the mij neting-l Soren` up or down the extent of movemenbof the plunger in the cylinder' may he varied, and consequently the emount of oil drawn into seid-chamber 13 below the cylinder and forced through the sighttnbe may also be' regolari-'eci to suit lthe circumstances.

In order to prevent the water from fue tube 2 from beingdrewn into the chamber 13 when the plunger is on ite upstroke, provide e series of valves, as seen in Fig. e. ln his View, which is e. vertical section teken in die exis of the sight-tube, es indicaterl by the broken line in Fig. 2, the errows show the course of the oil through the Valves enti passages.

@and b represent two Velvessetin the casing end eech provide with e. spring tokeep it pressed down te ite seni. The oil flows across 1the casing 'through these valves, and et ne other side of the ceeing, opposite AEhe passage .13.1, is turned abruptly end led upward be the nozzle 14, Ishrough e email here er'pessege c. The paseege 13 inclnee the entire oil-chnnnel from-the chamber 13 to the nozzle li. the bore c being e contract-ed portion thereof. This passage is or may be somewhat devions and branched, ite form being governed somewhat by the perticuler mode of construcing the lubrieetor. The pieton 4 reciproceies, the cern 8 moving it in one direction and. the spring 16 moving it in the other direction. A

it is not essentiel to my invenzion that the spring 16 shell he errenge to lift the plunger end the cerne 7 enel 8 to prees it down.

'lhe'position of these parte mey be reversed4 wi/th equellygcod results.

Heving. time described my invenicn, l cleiml i. En n, egliefeecl iubricetcr, the combine rien, with the outer ceeing end the cylinder d. .i i were therein,provided et its bese Withenenlergegl cheminer for therecepion of the oilforlubrl cation, and en outlet for 'ihe oil from sand chamber, the plunger playing in seid cyl1nder end its' lower end. adapted to enter said sisting of thecams end springs arranged substantially es .set forth, ofV theveive arranged in the passage leading from the chamber below said plunger, its stem arrange@ in the path of a projection from one of send coms,

whereby the movement :downward ofsa.icl cams opens the valve for the admission of oil to the chamber from the oil-reservoir, sub'- siantiallyes and for the purposes set forth.

l '55,- chamber and force the oil therefrommnd 'che i I i 'operating mechanism of the lubricant-or, con# -v 2. )In e. sightffeedA lubricetor, the combina..-

tion, withthe outer casing containing oil and the cylinder errangediherein, and the 'chamber below seid cylinder for the reception of the oii io be fed to the parte to be lubriceiecl, of e valve' controlling the admission ofV oil to seid chamber end menne-,substantially es described, for epening'end olosingsaid .tv valve. 3. In e sighofeecl lubriceter, the combinai ion, with the fixed ontercesing en the'cylinder arranged therein', provided. ntits base.

with a, chamber and e passage lending there 8O the plunger in snidcyiinclen ite leerer end ecering seid chamber beneath the cylinder,

to for the edmise'ion of the cil ,ne be fe, of

means, eubstantielly' es clescrihed, for operating seid plunger, end means for varying# thestroke 0f seid plunger, consisling ci the adjusting-screw mounted in' the casing, its

lower-end scripted to press upon the'npper.'

endo? seid plunger and limitthe movement thereof. l

ln witness whereof I have hereunto signed, my neme in the presence of two eulrscribinfg witnesses. l y GEQRGE MAULE MARCEIANT.

Wiineeeee: ,4

l ARTHUR B. CnoeeLnY, fioricet Piece, Huddersfield.

@nonne H. Rennen,

Clerk o Messrs. Tacker c Crossley, Patent 

